Electrons, Bonding, & Structure

Question 1

Spin pairing

Answer 1

When there are 2 electrons in an orbital, they must have “spin” in opposite directions

Question 2

Ionic bond

Answer 2

Electrostatic attraction between oppositley charged ions

Question 3

Giant lattice

Answer 3

Regular structure made of same basic unit repeated over and over again

Question 4

Electronic configuration

Answer 4

Number of electrons an atom has & how they are arranged

Question 5

Molocule

Answer 5

Multiple atoms bonded together y covalent bonds (doesn’t matter if same or different atom)

Question 6

Covalent bonds

Answer 6

Strong electrostatic attraction between shared pair of electrons & nuclei of bonded atoms

Question 7

Shape + angle when central atom has 5 bond pairs (expanded octet)

Answer 7

Trigonal bipyramidal, 120^0 between 3 bottom atoms, 90^0 between 2 top

Question 8

Shape + angle when central atom has 6 bond pairs (expanded octet)

Answer 8

Octahedral, 90^0

Question 9

Electronegativity

Answer 9

The ability of an atom to attract bonding electrons in a covalent bond

Question 10

Permanent dipole

Answer 10

Difference in charge between 2 atoms caused by the shift in electron density in the bond

Question 11

What electronegativity differences correspond to non-polar covalent, polar covalent, ionic

Answer 11

Non-polar covalent < 0.4
Polar covalent between 0.4 and 2.0
Mainly ionic >2.0
THESE ARE GENERAL APPROXIMATIONS